See how the ladder moves. God came down low. We don't raise ourselves high. He came all the way down low. Which is why in the Gospels we find Him nearest the tax collectors; the prostitutes; and the bartenders. Not the religious leaders. God chose what is low and despised in the world, even the things that are nothing, to bring to nothing the things that are something so that no human being might ever boast in the presence of God.

Intentionally by Mr. Taylor or not, Dr. Horton quotes briefly from the early part of The Weight of Glory. And, as I noted in the comment at Between Two Worlds, this sermon is one of my favorite writings from C.S. Lewis. So I'm going to quote (more extensively than Dr. Horton) from the start of that sermon.

The Weight of Glory

If you asked twenty good men today what they thought the highest of the virtues, nineteen of them would reply, unselfishness. But if you asked almost any of the great Christians of old he would have replied, love. You see what has happened? A negative term has been substituted for a positive, and this is of more than philological importance. The negative ideal of unselfishness carries with it the suggestion not primarily of securing good things for others, but of going without them ourselves, as if our abstinence and not their happiness was the important point. I do not think this is the Christian virtue of love. The New Testament has lots to say about self-denial, but not about self-denial as an end in itself. We are told to deny ourselves and to take up our crosses in order that we may follow Christ; and nearly every description of what we shall ultimately find if we do so contains an appeal to desire. If there lurks in most modern minds the notion that to desire our own good and earnestly to hope for the enjoyment of it is a bad thing, I submit that this notion has crept in from Kant and the Stoics and is no part of the Christian faith. Indeed, if we consider the unblushing promises of reward and the staggering nature of the rewards promised in the Gospels, it would seem that Our Lord finds our desires, not too strong, but too weak. We are half-hearted creatures, fooling about with drink and sex and ambition when infinite joy is offered us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased.

We must not be troubled by unbelievers when they say that this promise of reward makes the Christian life a mercenary affair. There are different kinds of reward. There is the reward which has no natural connection with the things you do to earn it, and is quite foreign to the desires that ought to accompany those things. Money is not the natural reward of love; that is why we call a man mercenary if he marries a woman for the sake of her money. But marriage is the proper reward for a real lover, and he is not mercenary for desiring it. A general who fights well in order to get a peerage is mercenary; a general who fights for victory is not, victory being the proper reward of battle as marriage is the proper reward of love. The proper rewards are not simply tacked on to the activity for which they are given, but are the activity itself in consummation. There is also a third case, which is more complicated. An enjoyment of Greek poetry is certainly a proper, and not a mercenary, reward for learning Greek; but only those who have reached the stage of enjoying Greek poetry can tell from their own experience that this is so. The schoolboy beginning Greek grammar cannot look forward to his adult enjoyment of Sophocles as a lover looks forward to marriage or a general to victory. He has to begin by working for marks, or to escape punishment, or to please his parents, or, at best, in the hope of a future good which he cannot at present imagine or desire. His position, therefore, bears a certain resemblance to that of the mercenary; the reward he is going to get will, in actual fact, be a natural or proper reward, but he will not know that till he has got it. Of course, he gets it gradually; enjoyment creeps in upon the mere drudgery, and nobody could point to a day or an hour when the one ceased and the other began. But it is just in so far as he approaches the reward that be becomes able to desire it for its own sake; indeed, the power of so desiring it is itself a preliminary reward.

The Christian, in relation to heaven, is in much the same position as this schoolboy. Those who have attained everlasting life in the vision of God doubtless know very well that it is no mere bribe, but the very consummation of their earthly discipleship; but we who have not yet attained it cannot know this in the same way, and cannot even begin to know it at all except by continuing to obey and finding the first reward of our obedience in our increasing power to desire the ultimate reward. Just in proportion as the desire grows, our fear lest it should be a mercenary desire will die away and finally be recognized as an absurdity. But probably this will not, for most of us, happen in a day; poetry replaces grammar, gospel replaces law, longing transforms obedience, as gradually as the tide lifts a grounded ship.